Hoka Cielo X 3 MD review

The Hoka Cielo X 3 MD is a good pick for:

• Competitive middle-distance runners who want a lively, propulsive spike for races from 800m to 3000m.
• Runners with narrow feet looking for a locked-in fit that stays secure through fast turns and indoor track laps.
• Hoka fans who want a top-tier spike for serious track sessions and race-day efforts.

We found that the aggressive, race-tight fit may be a deal-breaker for runners who prefer more relaxed upper. Instead, go for the Nike Dragonfly 2.

We also believe the soft PEBA foam won’t suit athletes wanting a firm, classic feel underfoot. In our experience, we do not recommend it for that group, and the Nike Dragonfly 2 Elite feels clearly more direct.

With a stack height of 19.5 mm, the Hoka Cielo X 3 MD pushes right against the World Athletics 20 mm limit to maximise muscle protection. This high-volume approach delivers exactly what we expect from a modern spike designed for their elite athletes.

The forefoot is the primary focus for track athletes, and Hoka also offers serious cushioning (for a track spike) at 16.8 mm. By packing in lots of PEBA from heel to toe, the spike is engineered to energise every lap while significantly reducing muscle fatigue.

The Cielo X 3 MD features a moderate drop that offers good cushioning while also not being totally flat and having a slightly steep lean forward.

However, a 2.7 mm drop still demands proper forefoot landings and solid running mechanics on the track.

What makes the Cielo X 3 MD truly competitive is the PEBA foam, which adds strong energy return and better muscle protection. We believe that HOKA wanted to focus especially on comfort because they used a super-soft formula that measured 27.1 AC on our durometer.

For runners who prefer a more direct feel, this foam may feel too soft and can also create some instability that may not be welcome. On the other hand, runners who enjoy plush foams and value comfort will find it excellent, as it compresses easily but also rebounds with powerful force.

One of the standout features of the Cielo X 3 MD is its carbon-fibre plate. It extends from heel to toe while also serving as the outsole, leaving all the foam above it and adding substantial stiffness along with the propulsive feel that defines this material.

Hoka is well known in road running shoes for using narrow, tight-fitting interiors that are usually a better match for runners with narrow or regular feet. With the Cielo X 3 MD, we found the same story.

In our first measurement, we recorded a width of 85.9 mm. That is extremely low and points to a super-aggressive fit that will not work for everyone.

The toebox also tapers aggressively, measuring 65.1 mm in width. We reached the same conclusion as in the previous test: if you love a glove-like spike that truly hugs your foot and does not allow any movement, this is a great option. Otherwise, it may feel overly restrictive from every angle.

Not from every angle, though.

Here we found 28.4 mm, which offers a bit more room than other spikes, so pressure from the top is not as noticeable as it is on the sides.

We also found that the carbon plate adds stiffness, but not to the level of some other options. In our 30-degree bend test, it reached 14.5N, which is more or less around average and likely a good balance for mid-distance events.

We also found the weight to be par for the course at 5.9 oz or 167g. It is not a standout feature, but it is also far from a drawback or anything that makes this shoe feel heavy against other competitors.

Breathability is one area where the Hoka Cielo X 3 MD may disappoint some runners, as its upper earned a modest 2/5 in our testing. While the material is impressively thin, the lack of dedicated ventilation holes causes the shoe to trap more heat than we typically prefer in a high-end spike.

However, it is essential to consider the intended purpose of this shoe. Designed for middle-distance events lasting less than 10 minutes, the Cielo X 3 MD prioritises weight and structure over long-term cooling. In these short, high-intensity efforts, thermal buildup is rarely a performance-limiting factor.

Under our digital microscope, the upper material reveals its true strength.

The fabric is an engineering marvel—one of the lightest we have ever encountered for sure—offering a paper-thin profile that feels almost weightless on the foot while maintaining the tensile strength necessary for track racing.

To mitigate the lack of airflow in the forefoot, Hoka integrated some extra ventilation into the tongue. This design choice introduces much-needed breathability through the midfoot, helping to compensate for the toebox.

The Cielo X 3 MD is very balanced from a rigidity standpoint too. Here we needed 11.1 Nm of torque to twist it in both directions, which is again moderate and far from high.

Likely a very good choice, as it is not as rigid as some sprint shoes, but still more aggressive than a flexible design.

Measuring 98.5 mm at the midsole, the Cielo X1 MD strikes an ideal balance for middle-distance performance. This width provides a stable platform for confident landings and a powerful toe-off, yet remains nimble enough to feel responsive and agile during high-cadence events like the 800m.

The heel's 62.6-mm midsole width further underscores the racing pedigree of the Cielo X 3 MD. This narrow profile is a clear weight-saving and agility-boosting measure, designed for aggressive forefoot striking rather than heel landings.

The toebox did not look very promising for durability, and indeed we found the lowest possible score with a 1 out of 5.

We were not surprised, although despite this result we do not think most runners will experience durability issues, as the toe cap is reinforced.

Fortunately, the heel padding excelled and changed the story here, earning a fantastic 5 out of 5 score.

The insole measures 2.9 mm in thickness, aligning with industry standards rather than pushing into extremes. As usual with spikes, the insole is non-removable.

The lacing system of the Hoka Cielo X 3 MD uses reinforced eyelets and a tongue loop to help keep it centred. The laces are flat instead of textured, although they still get the job done.

Hoka chose to skip foam padding in the tongue and went with a stripped-down design fully focused on weight savings and performance, with just 1.5 mm of thickness. We fully support that approach.

The heel features an extended collar design that, in our view, enhances the sleek look of the shoe while also providing an easy grab point when needed.

The Hoka Cielo X 3 MD is fairly priced compared with other premium running spikes, but it can still feel expensive for runners who only race on the track a few times each year.

However, performance comes at a cost, and with spikes, it is very difficult to find a cheaper option that includes carbon fibre and a premium foam.

The Cielo X 3 MD uses a 6-pin configuration that delivers excellent grip on the track, and the pins can also be replaced if needed since the tool is included in the box.